214323 379 Revision A
5.8.4 Installing Knifehead Bearing
Figure 5.104: Knifehead Bearing Assembly
1. Place O-ring (E) and plug (D) into knifehead.
IMPORTANT:
Install the bearing with the stamped end (the end with
the identification markings) facing up.
2. Use a flat-ended tool with the same approximate
diameter as bearing (C), and push the bearing into the
knifehead until the top of the bearing is flush with the
step in the knifehead.
3. Install seal (B) into knifehead with the lip
facing outwards.
IMPORTANT:
To prevent premature knifehead or knife drive box
failure, ensure there’s a tight fit between knifehead pin
(A) and the needle bearing, and also between the
knifehead pin and the output arm.
4. Install the knife. Refer to 5.8.5 Installing Knife, page
379.
5.8.5 Installing Knife
WARNING
To avoid bodily injury or death from unexpected start-up or fall of raised machine, always stop engine,
remove key, and engage safety props before going under machine for any reason.
WARNING
Stand to rear of knife during installation to reduce risk of injury from cutting edges. Wear heavy gloves
when handling knife.
1. Stop engine and remove the key from ignition.
Figure 5.105: Knifehead
2. Slide the knife into place and align the knifehead with
the output arm.
3. For ease of removing or installing knifehead pin,
remove grease zerk from pin.
4. Install knifehead pin (A) through the output arm and into
the knifehead. Tap knifehead pin (A) down, make sure
the pin is seated at the bottom of the knifehead.
5. Set groove (B) in the knifehead pin 1.5 mm (1/16 in.)
above output arm (C). Secure with 5/8 in. x 3 in. hex
head bolt and nut (D), and torque to 217 Nm (160 lbf·ft).
6. Using a feeler gauge, check that the gap at location (E)
is 0.25 mm (0.01 in.).
MAINTENANCE AND SERVICING
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